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Proceedings Paper

Investigation of the smectic layer spacing in the homologous series of 4-isothiocyanatophenyl 4-(trans-4-alkylcyclohexyl) benzoates
Author(s): Roman S. Dabrowski; Jerzy Dziaduszek; Jan Przedmojski; J. Baran; Jan Jadzyn; Grzegorz Czechowski
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Paper Abstract

The homologous series of 4-isothiocyanatophenyl 4-(trans-4-alkylcyclohexyl) benzoates containing members with alkyl chain ethyl to dodecyl were synthesized and their phase transition temperatures, smectic layer spacing, and dielectric permittivity were measured. It was observed that smectic A1 layer spacing is expanding from d/1 on the order of magnitude 1 to d/1 on the order of magnitude 1.1 when alkyl is increasing from butyl to dodecyl. This behavior is accompanied by the great change in (epsilon) (perpendicular) which is strongly increasing from pentyl to octyl and then from nonyl begins to decrease. It was proposed to term smectic A1 with d/1 > 1 enhanced smectic A1 (A1c).

Paper Details

Date Published: 15 October 1993
PDF: 4 pages
Proc. SPIE 1845, Liquid and Solid State Crystals: Physics, Technology and Applications, (15 October 1993); doi: 10.1117/12.156969
Show Author Affiliations
Roman S. Dabrowski, Military Technical Academy (Poland)
Jerzy Dziaduszek, Military Technical Academy (Poland)
Jan Przedmojski, Warsaw Univ. of Technology (Poland)
J. Baran, Warsaw Medical Academy (Poland)
Jan Jadzyn, Institute of Molecular Physics (Poland)
Grzegorz Czechowski, Institute of Molecular Physics (Poland)


Published in SPIE Proceedings Vol. 1845:
Liquid and Solid State Crystals: Physics, Technology and Applications

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